Remove wrapped_clang params files after use
Remove wrapped_clang params files after use

We use TempFile's destructor to remove the params file. Because we
previously exec'd a new process, this was never called. Now we run
them as subprocesses so we can cleanup afterwards.

Closes #12896.

PiperOrigin-RevId: 366211823

bazelbuild/bazel,twitter-forks/bazel,meteorcloudy/bazel,bazelbuild/bazel,bazelbuild/bazel,twitter-forks/bazel,ButterflyNetwork/bazel,bazelbuild/bazel,twitter-forks/bazel,katre/bazel,katre/bazel,ButterflyNetwork/bazel,cushon/bazel,twitter-forks/bazel,twitter-forks/bazel,perezd/bazel,perezd/bazel,perezd/bazel,bazelbuild/bazel,twitter-forks/bazel,katre/bazel,ButterflyNetwork/bazel,perezd/bazel,katre/bazel,katre/bazel,cushon/bazel,bazelbuild/bazel,cushon/bazel,perezd/bazel,meteorcloudy/bazel,cushon/bazel,cushon/bazel,ButterflyNetwork/bazel,meteorcloudy/bazel,meteorcloudy/bazel,ButterflyNetwork/bazel,cushon/bazel,twitter-forks/bazel,perezd/bazel,meteorcloudy/bazel,perezd/bazel,ButterflyNetwork/bazel,meteorcloudy/bazel,meteorcloudy/bazel,katre/bazel